Slidable step for mounting and dismounting a vehicle

ABSTRACT

An assembly for mounting or dismounting a vehicle comprising a step that is structured to slide on an axis longitudinally along the vehicle on a rail. The step has a pivot assembly enabling rotation from a stowed position to open position and back. The slidable step can be stowed in place by engaging a latch mounted to the vehicle. A handrail assembly can be inserted into a handrail-receiving member to facilitate grasping a handrail upon mounting or dismounting the vehicle.

BACKGROUND

Flatbed vehicles have many virtues. They can haul heavy and/or oversizedgoods, such as heavy equipment and machines. In addition, they can haulmany smaller items. Further, loading a flatbed is not impeded by theclosed sides of a truck design with a rear door.

However, the very virtues of a flatbed can present challenges. Forexample, when it comes to loading, heavy and/or oversized cargo may berelatively more difficult to secure to the truck, and pose awkwardpositioning challenges. The same applies where there are many smalleritems, which must be restrained from movement. In addition, once goodsarrive at their destination they must be unloaded from the flatbed.Doing so can be complicated, arduous, and time-consuming for the stafftasked with unloading.

There is value in giving trained personnel maximum access andflexibility to handle and control goods on a vehicle requiringsignificant loading or unloading. This includes giving individualsenhanced ease in mounting and dismounting the vehicle, which can be manyfeet off the ground. The greater the access of personnel, the greaterthe efficiency, performance and safety of hauling goods.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 illustrates one embodiment of a step assembly in an openposition.

FIG. 2 illustrates one embodiment of a step assembly in a stowedposition.

FIG. 3 illustrates one embodiment of a step assembly, as viewed frombelow.

FIG. 4 illustrates an embodiment of a step assembly in a stowedposition, as viewed from the right side.

FIG. 5 illustrates an example embodiment showing a step assemblyslidably advancing along a rail.

FIG. 6 illustrates an example embodiment showing a pipe sleeve, asviewed from the right.

FIG. 7 illustrates an example embodiment of a handrail assembly engagedwith a step assembly, as viewed from the right.

FIG. 8 illustrates an example embodiment of a handrail-receiving member.

FIG. 9 illustrates an example embodiment of a step assembly withhandrail-receiving members, as viewed from below.

DETAILED DESCRIPTION

FIG. 1 illustrates one embodiment of a step assembly 100 in an openposition. Step assembly 100 has a tread 110 on which one can place afoot. In FIG. 1, the top of tread 110 is seen because step assembly 100is in an open position. Tread 110 can assist in weight-bearing of anindividual placing a foot on the step. Tread 110 can havetraction-providing properties depending on the type of tread. Shown is aperforated tread with diamond-shaped features, but it will beappreciated that numerous varieties of tread can be employed.

An endplate can be employed to engage one, multiple or all edges oftread 110. There can be multiple endplates, such as along a tread widthportion on the left side (endplate 120) and right side (endplate 121) oftread 110. The endplates 120, 121 can run along axes of tread width. Inaddition, endplates 122, 124 can be provided along axes of tread length.Endplate 122 can represent a near endplate of tread 110. It can also, ifso structured, comprise a nosing. Endplate 124 can represent a farendplate of tread 110. An endplate can assist with structural integrityyet various forms can be used, and can be optional under certaincircumstances. Thus, the location of a portion of a tread can bedesignated by a location, e.g., tread left width positionedsubstantially at endplate 120, tread right width positionedsubstantially at endplate 121, tread near length 122 positionedsubstantially at endplate 122, and tread far length 124 positionedsubstantially at endplate 124. Each of these locations can have a fullendplate, a partial or minimal endplate, or no endplate. Thus, thelocation of a portion of a tread can also be designated by a locationsuch as left width, right width, near length, or far length. It will beappreciated that in embodiments the left width can be straight, or inother embodiments it can be another shape; accordingly, a tread 110 thatis curved, or in embodiments even circular, can be used, withaccompanying shapes defining its periphery. Thus, herein a left width isunderstood to mean that portion of the tread that is at the left,whether it is straight, curved, or a combination of both. The foregoingapplies to a right width, near length, or far length; in other words,the location of the tread can be defined in relation to its orientation.

Step assembly 100 can assume an open position as in FIG. 1, or assume astowed position as in FIG. 2. Left bracket member 130 can be a structurethat engages left rail-engaging member 140. Left bracket member 130 canhelp enable step assembly 100 to swing by virtue of left pivot assembly132. Left pivot assembly 132 can include a rod about which tread 110 canrotate wherein the rod is held in place by a structure(s), suchstructure(s) engaging on the one hand left bracket member 130 and on theother hand tread 110 or endplate 120. Added types of pivot-assemblystructures can be used. Left rail-engaging member 140, which can besecured to left bracket member 130, engages rail 150 that runs along theside of the vehicle. A rail 150 can be on one or both sides of thevehicle, formed integrally with, or fastened to, the vehicle.

It will be appreciated that, in embodiments, along a right width 121there can be right-side counterpart structures to left-side structures120, 130, 132, and 140, which will be discussed later.

Step assembly 100 can be positioned in engagement with rail 150 suchthat step assembly 100 can be used by an individual to mount or dismountthe vehicle, enabling easier access to and from the flatbed portion 170of the vehicle. Thus, an individual can use step assembly 100 to gainaccess to the flatbed portion 170, and, for example, use securingdevices such as chains 180 to secure goods on the vehicle. In thismanner, loading and unloading the vehicle can be accomplished in a moreefficient fashion.

Also shown is latch member 160, mounted to the vehicle, which can assistwith holding step assembly 100 in place in a stowed position. Furthershown is a frame member 190 that can represent a vertical portionbetween the cabin portion of the vehicle and the flatbed portion 170.Step assembly 100 can be positioned to engage with latch member 160 tostow step assembly 100. Latch member 160 can comprise one of numeroussuitable types of latches, as will be appreciated. Further, it will beappreciated that step assembly 100 can be structured in multiple ways toengage latch member 160, depending on nature of latch member 160 used.

FIG. 2 illustrates one embodiment of a step assembly 100 in a stowedposition. In FIG. 2, the bottom of tread 110 is seen because stepassembly 100 is in a closed position. Step assembly 100 is secured tothe vehicle by a latch member 160, inhibiting step assembly 100 frommoving both laterally along rail 150, and also rotationally towards anopen position. In other words, in stowed position, step assembly 100 isessentially fixed alongside the vehicle. In the stowed position, stepassembly 100 does not extend lateral to the vehicle. A latch can besecured to the vehicle in multiple locations so that it can engage stepassembly 100.

FIG. 3 is another view of one embodiment of a step assembly 100 in astowed position. The bottom of tread 110 is seen. Left bracket member130 can be secured to left rail-engaging member 140, and right bracketmember 131 can be secured to right rail-engaging member 141. It will beappreciated that there are numerous ways for bracket members 130, 131 tobe secured to respective rail-engaging members 140, 141. In addedembodiments, left bracket member 130 and left rail-engaging member 140are integrally formed, representing one member, and the same for rightbracket member 131 and right rail-engaging member 141. Left pivotassembly 132 can extend through a left endplate 120 of tread 110 throughopenings in left bracket member 130, which can enable rotation of thestep assembly. An identical or similar right pivot assembly 133 canextend through right endplate 121 of tread 110. Left pivot assembly 132can engage left endplate 120 and be located near the rear of the tread,i.e., toward the far length 124 such that when step assembly 100 islowered into an open position it can be supported by a structure holdingit essentially stable such as rail-engaging member 140, or rail 150, orboth, or another mechanism. Thus, an individual can step onto or off ofstep assembly 100. Right-side counterpart structures can perform similarfunctions.

FIG. 4 is a view of a step assembly 100 in a stowed position, as viewedfrom the right side. Illustrated are right endplate 121 covering a rightwidth of tread 110 (not shown). Also illustrated are right bracketmember 131, right pivot assembly 133, and right rail-engaging member141. Additionally, step assembly 100 can have right wedge material 421that enables additional stability, such as for tread portion 110 to reston rail-engaging members 140, 141 or another structure and so tostabilize tread 110 for being stepped upon.

FIG. 5 illustrates an example embodiment whereby step assembly 100 canbe slidably advanced along rail 150. Once unlatched from latch member160, step assembly 100 is free to slide on an axis longitudinally alongthe vehicle along rail 150. Step assembly 100 is also able to rotatefrom a stowed position to an open position and back. Having advancedslide assembly 100 from a first position 510 longitudinally toward theback of the vehicle, the step, in its second position 520, can be fullylowered. Once lowered into an open position, an individual can use thestep to mount or dismount the vehicle. As desired, the step can be slidback from a second position 520 to a first position 510, onto anyposition along rail 150. Upon reaching the first position, the slide maybe, if desired, securedly engaged to latch member 160.

FIG. 6 illustrates an example embodiment where, in a right-side view, aright handrail-receiving member 611 is secured to step assembly 100 toreceive a right lower portion of a handrail assembly (not shown). Righthandrail-receiving member 611 can comprise a pipe-sleeve or otherstructure. Right ball lock pin 621 can be deployed to engage in a securemanner with a handrail assembly. In embodiments, right ball lock pin 621can be positioned in an additional location on right handrail-receivingmember 611. In an embodiment, there is a right handrail-receiving member611 and a left-handrail receiving member 610 (not shown). However, inembodiments there can be one such member, or three or more.

FIG. 7 illustrates an example embodiment of a handrail assembly engagedwith a step assembly, as viewed from the right. Step assembly 100 is inan open position, and thus handrail-receiving member 611 can receive aright handrail post 711. Right handrail-receiving member 611 cansecuredly engage right handrail post 711 by virtue of a ball lock pin621. At the upper portion of right handrail post 711 can be secured ahandrail 721, the position of which is reinforced by handrail support731; this assembly can engage a left handrail post (not shown). In thismanner, an individual can step onto step assembly 100 and stabilizehimself or herself by embracing handrail 721 in mounting or dismountingthe vehicle. Right handrail post 711, handrail 721, and handrail support731 can be formed from an ASTM A53 steel stock, or some or all of thecomponents hereof can be formed from a suitably rigid material; acounterpart handrail post on the left side can be similarly constructed.Right handrail post 711, right handrail 721, and right handrail support731 can comprise a hand-rail assembly; in addition, a left handrail postcan be used in combination therewith.

Accordingly, once step assembly 100 is advanced to a desired locationalong the rail, and lowered into an open position, a handrail assemblycan be inserted into handrail-receiving member 611.

FIG. 8 illustrates an example embodiment of a mechanism for engaging aright handrail post 711 with a right handrail-receiving member 611. Inan embodiment herein, right handrail post 711 can be inserted into righthandrail-receiving member 611. The two structures can be securedlyengaged by right ball lock pin 621. Upon receiving right handrail post711, right handrail-receiving member 611 can secure right handrail post711, whereupon an individual can use handrail 721 in mounting ordismounting from the vehicle.

FIG. 9 illustrates an example embodiment of a step assembly with lefthandrail-receiving member 610 and right handrail-receiving member 611,as viewed from below. The step assembly is depicted as in a stowedposition. Once it is opened, it will be able to receive left handrailpost 710 (not shown) and right handrail post 711 (as in FIG. 7).

In the description hereof, reference is made to the accompanyingdrawings which illustrate several embodiments of the present invention.It is understood that other embodiments may be utilized, and mechanical,compositional, structural, and other operational changes may be madewithout departing from the spirit and scope of the present disclosure.The accompanying detailed description is not to be taken in a limitingsense, and the scope of the embodiments of the present invention isdefined only by the claims of the issued patent.

The examples presented herein are intended to illustrate potential andspecific implementations of the present invention. It can be appreciatedthat the examples are intended primarily for purposes of illustration ofthe invention for those skilled in the art. No particular aspect oraspects of the examples are necessarily intended to limit the scope ofthe present invention. For example, those skilled in the art willappreciate that the structures for securing described herein (e.g.,forming the junctions) may be replaced or supplemented by other suitablesecuring means including a variety of other types of mechanical securingdevices (e.g., nails, rivets, or others). In another example, aparticular choice of construction material (e.g., steel, polymer, etc.)may be replaced or supplemented by another type of material which issuitable for the same or similar structure or function.

It will be appreciated that, for convenience and clarity of disclosure,terms describing relative orientation or spatial positioning such as“vertical,” “horizontal,” “up,” “down,” “top,” “front,” “back,” or“bottom,” may be used at times herein with respect to the drawings andtext description in association with various embodiments of theinvention. However, such terms are primarily used for illustrativepurposes and are not necessarily intended to be limiting in nature.

It is to be understood that the figures and descriptions of the presentinvention have been simplified to illustrate elements that are relevantfor a clear understanding of the present invention, while eliminating,for purposes of clarity, other elements. Those of ordinary skill in theart will recognize, however, that these and other elements may bedesirable. However, because such elements are well known in the art, andbecause they do not facilitate a better understanding of the presentinvention, a more detailed discussion of such elements is not providedherein. It should be appreciated that the figures are presented forillustrative purposes and not as construction drawings. Omitted detailsand modifications or alternative embodiments are within the purview ofpersons of ordinary skill in the art. For example, there may bevariations to these diagrams or the operations described herein withoutdeparting from the spirit of the invention.

It can be appreciated that, in certain aspects of the present invention,a single component may be replaced by multiple components, and multiplecomponents may be replaced by a single component, to provide an elementor structure or to perform a given function or functions. In addition,components engaging each other can be separate components, or integrallyformed. Except where such substitution or replaceability would not beoperative to practice certain embodiments of the present invention, suchsubstitution or replaceability is considered within the scope of thepresent invention.

While the invention has been described in terms of particularembodiments and illustrative figures, those of ordinary skill in the artwill recognize that the invention is not limited to the embodiments orfigures described.

Therefore, it should be understood that the invention can be practicedwith modification and alteration within the spirit and scope of theappended claims. The description is not intended to be exhaustive or tolimit the invention to the precise form disclosed. It should beunderstood that the invention can be practiced with modification andalteration and that the invention be limited only by the claims and theequivalents thereof.

What is claimed is:
 1. A step assembly for mounting or dismounting avehicle, comprising: a tread having a left width portion, a right widthportion, a near length portion, and a far length portion; a left bracketmember engaging the left width portion, the left bracket member furtherengaging a left pivot assembly; a right bracket member engaging theright width portion, the right bracket member further engaging a rightpivot assembly; the left bracket member secured to a left rail-engagingmember, the left rail-engaging member structured so as to enableslidable movement longitudinally along the vehicle of the step assemblyalong a rail; and the right bracket member secured to a rightrail-engaging member, the right rail-engaging member structured so as toenable slidable movement longitudinally along the vehicle of the stepassembly along a rail.
 2. The step assembly of claim 1, wherein the leftpivot assembly and right pivot assembly enable the tread portion torotate along an axis substantially proximal to the far length portion ofthe tread.
 3. The step assembly of claim 1, wherein the step assembly,in a stowed position, is structured to securedly engage a latch mountedon the vehicle.
 4. The step assembly of claim 1, wherein the treadportion is perforated.
 5. The step assembly of claim 1, wherein a leftendplate is engaged with the left width portion and at least a portionof the left pivot assembly extends through the left endplate.
 6. Thestep assembly of claim 1, wherein a right endplate is engaged with theright width portion and at least a portion of the right pivot assemblyextends through the right endplate.
 7. A step assembly for mounting ordismounting a vehicle, comprising: a tread having a left width portion,a right width portion, a near length portion, and a far length portion;a left bracket member engaging the left width portion, the left bracketmember further engaging a left pivot assembly; a right bracket memberengaging the right width portion, the right bracket member furtherengaging a right pivot assembly; the left bracket member secured to aleft rail-engaging member, the left rail-engaging member structured soas to enable slidable movement longitudinally along the vehicle of thestep assembly along a rail; the right bracket member secured to a rightrail-engaging member, the right rail-engaging member structured so as toenable slidable movement longitudinally along the vehicle of the stepassembly along a rail; and at least one handrail-receiving membermounted to at least the left width portion or right width portion forsecuredly engaging a handrail assembly.
 8. The step assembly of claim 7,wherein the left pivot assembly and right pivot assembly enable thetread portion to rotate along an axis substantially proximal to the farlength portion of the tread.
 9. The step assembly of claim 7, whereinthe step assembly, in a stowed position, is structured to securedlyengage a latch mounted on the vehicle.
 10. The step assembly of claim 7,wherein the tread portion is perforated.
 11. The step assembly of claim7, wherein a left endplate is engaged with the left width portion and atleast a portion of the left pivot assembly extends through the leftendplate.
 12. The step assembly of claim 7, wherein a right endplate isengaged with the right width portion and at least a portion of the rightpivot assembly extends through the right endplate.